JP4392628B2 - Sulfinic acid derivatives and their production and use - Google Patents
Sulfinic acid derivatives and their production and use Download PDFInfo
- Publication number
- JP4392628B2 JP4392628B2 JP51846699A JP51846699A JP4392628B2 JP 4392628 B2 JP4392628 B2 JP 4392628B2 JP 51846699 A JP51846699 A JP 51846699A JP 51846699 A JP51846699 A JP 51846699A JP 4392628 B2 JP4392628 B2 JP 4392628B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- sulfinic acid
- hydroxy
- mixture
- acid compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 150000003452 sulfinic acid derivatives Chemical class 0.000 title description 6
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- 150000003455 sulfinic acids Chemical class 0.000 claims abstract description 6
- 238000004061 bleaching Methods 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 150000001875 compounds Chemical class 0.000 claims description 17
- -1 sulfinic acid compound Chemical class 0.000 claims description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- 239000007844 bleaching agent Substances 0.000 claims description 11
- 125000003118 aryl group Chemical group 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 9
- 238000007720 emulsion polymerization reaction Methods 0.000 claims description 9
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 8
- 230000001603 reducing effect Effects 0.000 claims description 8
- 239000004753 textile Substances 0.000 claims description 8
- 229910001413 alkali metal ion Inorganic materials 0.000 claims description 7
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 claims description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 7
- 229910021645 metal ion Inorganic materials 0.000 claims description 6
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims description 5
- 125000003342 alkenyl group Chemical group 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
- 125000001424 substituent group Chemical group 0.000 claims description 3
- 238000004048 vat dyeing Methods 0.000 claims description 3
- 125000005913 (C3-C6) cycloalkyl group Chemical group 0.000 claims description 2
- HFNAEOMWSWSGQB-UHFFFAOYSA-N C(CC)(=O)O.C(C)[Na] Chemical compound C(CC)(=O)O.C(C)[Na] HFNAEOMWSWSGQB-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- OPGYRRGJRBEUFK-UHFFFAOYSA-L disodium;diacetate Chemical compound [Na+].[Na+].CC([O-])=O.CC([O-])=O OPGYRRGJRBEUFK-UHFFFAOYSA-L 0.000 claims description 2
- DAKOBUIKDCTJEB-UHFFFAOYSA-L disodium;propanoate Chemical compound [Na+].[Na+].CCC([O-])=O.CCC([O-])=O DAKOBUIKDCTJEB-UHFFFAOYSA-L 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 125000001624 naphthyl group Chemical group 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- DJWUNCQRNNEAKC-UHFFFAOYSA-L zinc acetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O DJWUNCQRNNEAKC-UHFFFAOYSA-L 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 3
- 229910052725 zinc Inorganic materials 0.000 claims 2
- 239000011701 zinc Substances 0.000 claims 2
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims 1
- NQCAHJBFOVLYJA-UHFFFAOYSA-K CCC([O-])=O.[O-]S([O-])=O.[Na+].[Na+].[Na+] Chemical compound CCC([O-])=O.[O-]S([O-])=O.[Na+].[Na+].[Na+] NQCAHJBFOVLYJA-UHFFFAOYSA-K 0.000 claims 1
- 239000012267 brine Substances 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000003054 catalyst Substances 0.000 claims 1
- 229910052749 magnesium Inorganic materials 0.000 claims 1
- 230000000737 periodic effect Effects 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 238000009895 reductive bleaching Methods 0.000 claims 1
- 238000007670 refining Methods 0.000 claims 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims 1
- 150000003460 sulfonic acids Chemical class 0.000 claims 1
- 238000009988 textile finishing Methods 0.000 claims 1
- KSDKDOFPNUJANI-UHFFFAOYSA-L trisodium sulfite Chemical compound [Na+].[Na+].[Na+].[O-]S([O-])=O KSDKDOFPNUJANI-UHFFFAOYSA-L 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 24
- 238000006243 chemical reaction Methods 0.000 description 16
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000000243 solution Substances 0.000 description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 11
- CIWBSHSKHKDKBQ-DUZGATOHSA-N D-isoascorbic acid Chemical compound OC[C@@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-DUZGATOHSA-N 0.000 description 9
- 235000010350 erythorbic acid Nutrition 0.000 description 9
- 229940026239 isoascorbic acid Drugs 0.000 description 9
- 238000006116 polymerization reaction Methods 0.000 description 9
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 9
- BUUPQKDIAURBJP-UHFFFAOYSA-N sulfinic acid Chemical compound OS=O BUUPQKDIAURBJP-UHFFFAOYSA-N 0.000 description 9
- 239000005995 Aluminium silicate Substances 0.000 description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 8
- 235000012211 aluminium silicate Nutrition 0.000 description 8
- 239000012043 crude product Substances 0.000 description 8
- 229940017705 formaldehyde sulfoxylate Drugs 0.000 description 8
- HHLFWLYXYJOTON-UHFFFAOYSA-N glyoxylic acid Chemical compound OC(=O)C=O HHLFWLYXYJOTON-UHFFFAOYSA-N 0.000 description 8
- SBGKURINHGJRFN-UHFFFAOYSA-N hydroxymethanesulfinic acid Chemical compound OCS(O)=O SBGKURINHGJRFN-UHFFFAOYSA-N 0.000 description 8
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 8
- 239000011541 reaction mixture Substances 0.000 description 7
- 239000004744 fabric Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 150000003254 radicals Chemical class 0.000 description 5
- 238000004448 titration Methods 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- 239000012736 aqueous medium Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 4
- 150000002978 peroxides Chemical class 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 239000013055 pulp slurry Substances 0.000 description 4
- SMQUZDBALVYZAC-UHFFFAOYSA-N salicylaldehyde Chemical compound OC1=CC=CC=C1C=O SMQUZDBALVYZAC-UHFFFAOYSA-N 0.000 description 4
- 235000015424 sodium Nutrition 0.000 description 4
- 229940083542 sodium Drugs 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical group CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 235000010323 ascorbic acid Nutrition 0.000 description 3
- 229960005070 ascorbic acid Drugs 0.000 description 3
- 239000011668 ascorbic acid Substances 0.000 description 3
- GQYHDFIXEPEHIC-RKJRWTFHSA-O azanium;(2r)-2-[(2r)-3,4-dihydroxy-5-oxo-2h-furan-2-yl]-2-hydroxyethanolate Chemical compound [NH4+].[O-]C[C@@H](O)[C@H]1OC(=O)C(O)=C1O GQYHDFIXEPEHIC-RKJRWTFHSA-O 0.000 description 3
- 238000003776 cleavage reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- QJQZEJFUIOWFMS-UHFFFAOYSA-N formaldehyde;sulfanediol Chemical class O=C.OSO QJQZEJFUIOWFMS-UHFFFAOYSA-N 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 235000010755 mineral Nutrition 0.000 description 3
- 230000007017 scission Effects 0.000 description 3
- NYYSPVRERVXMLJ-UHFFFAOYSA-N 4,4-difluorocyclohexan-1-one Chemical compound FC1(F)CCC(=O)CC1 NYYSPVRERVXMLJ-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical class [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- LCTONWCANYUPML-UHFFFAOYSA-N Pyruvic acid Chemical compound CC(=O)C(O)=O LCTONWCANYUPML-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 125000000753 cycloalkyl group Chemical group 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000001451 organic peroxides Chemical class 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- ZRSNZINYAWTAHE-UHFFFAOYSA-N p-methoxybenzaldehyde Chemical compound COC1=CC=C(C=O)C=C1 ZRSNZINYAWTAHE-UHFFFAOYSA-N 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000004076 pulp bleaching Methods 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- SGHFQOUMIOXWEM-UHFFFAOYSA-M sodium hydroxy-(2-hydroxyphenyl)methanesulfinate Chemical compound [Na+].OC(c1ccccc1O)S([O-])=O SGHFQOUMIOXWEM-UHFFFAOYSA-M 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- CAAIULQYGCAMCD-UHFFFAOYSA-L zinc;hydroxymethanesulfinate Chemical compound [Zn+2].OCS([O-])=O.OCS([O-])=O CAAIULQYGCAMCD-UHFFFAOYSA-L 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- XXRCUYVCPSWGCC-UHFFFAOYSA-N Ethyl pyruvate Chemical compound CCOC(=O)C(C)=O XXRCUYVCPSWGCC-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- PNKUSGQVOMIXLU-UHFFFAOYSA-N Formamidine Chemical compound NC=N PNKUSGQVOMIXLU-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 150000003934 aromatic aldehydes Chemical class 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- KLSBASGQHCAVHQ-UHFFFAOYSA-L disodium;2-hydroxy-2-sulfinatoacetate Chemical compound [Na+].[Na+].[O-]C(=O)C(O)S([O-])=O KLSBASGQHCAVHQ-UHFFFAOYSA-L 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229940117360 ethyl pyruvate Drugs 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000004464 hydroxyphenyl group Chemical group 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 235000019239 indanthrene blue RS Nutrition 0.000 description 1
- UHOKSCJSTAHBSO-UHFFFAOYSA-N indanthrone blue Chemical compound C1=CC=C2C(=O)C3=CC=C4NC5=C6C(=O)C7=CC=CC=C7C(=O)C6=CC=C5NC4=C3C(=O)C2=C1 UHOKSCJSTAHBSO-UHFFFAOYSA-N 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 125000005385 peroxodisulfate group Chemical group 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 229940107700 pyruvic acid Drugs 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229940017704 sodium formaldehyde sulfoxylate dihydrate Drugs 0.000 description 1
- FMDFPSSMTNQSIV-UHFFFAOYSA-M sodium hydroxy-(4-methoxyphenyl)methanesulfinate Chemical compound [Na+].COc1ccc(cc1)C(O)S([O-])=O FMDFPSSMTNQSIV-UHFFFAOYSA-M 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- UCWBKJOCRGQBNW-UHFFFAOYSA-M sodium;hydroxymethanesulfinate;dihydrate Chemical compound O.O.[Na+].OCS([O-])=O UCWBKJOCRGQBNW-UHFFFAOYSA-M 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 125000003107 substituted aryl group Chemical group 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
- PENRVBJTRIYHOA-UHFFFAOYSA-L zinc dithionite Chemical compound [Zn+2].[O-]S(=O)S([O-])=O PENRVBJTRIYHOA-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/62—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds with sulfate, sulfonate, sulfenic or sulfinic groups
-
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- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
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- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
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Abstract
Description
本発明は、スルフィン酸誘導体およびそれらの製造と、並びに種々の適用分野におけるそれらの使用に関する。
既知のように、スルフィン酸H2SO2は最も強力な既知の還元剤の一つである。その遊離酸は不安定である。従ってその安定なそして対応して管理可能な誘導体の形においてのみ商業的に利用可能である。
今日以下のスルフィン酸誘導体が商業的に重要性を得ている。
1.亜ジチオン酸ナトリウム(製紙において繊維の漂白、バット染色および織物漂白、鉱物漂白、工業排水中の重金属還元)
2.ホルムアルデヒドスルホキシル酸ナトリウム二水塩(繊維色抜きプリント、織物漂白、乳化重合におけるレドックス共触媒、重金属還元、医薬品)
3.ホルムアミジンスルフィン酸(製紙において繊維漂白、織物漂白)
4.ホルムアルデヒドスルホキシル酸亜鉛(織物プリントおよび織物漂白)
上に述べたスルフィン酸誘導体のすべては水溶液または分散液の形で使用される。水性媒体中では、亜ジチオン酸およびアルカリ金属ホルムアミジンスルフィン酸塩−遊離ホルムアミジンスルフィン酸は水に実質上不溶であり、そしてその酸の形では非常に僅かの還元作用を持つのみである――は短時間だけ安定である。その結果、室温においてさえもそれらはすぐれた還元能力および繊維に対しすぐれた漂白効果を示す。ホルムアルデヒドスルホキシル酸ナトリウムおよびホルムアルデヒドスルホキシル酸亜鉛の水性調製物は室温で数ヶ月安定である。その結果、この両方のホルムアルデヒドスルホキシル酸塩は90℃以上の温度でそれらの真の還元作用を示す。強アルカリ性または強酸性媒体中、または適当な強い酸化剤の存在下においては、両方のホルムアルデヒドスルホキシル酸塩は勿論90℃以下の温度で還元効果を有する。
ホルムアルデヒドスルホキシル酸塩のこの特定の性質、すなわち5℃ないし90℃の温度において非常に均一なそして容易にコントロールできる還元効果を発揮することは、フリーラジカル開始乳化重合に使用可能とする。この場合、ホルムアルデヒドスルホキシル酸塩は種々の乳化重合系に使用される。SBS(スチレンブタジエンゴム)の冷時製造の場合、重合は有機過酸化物を用いて開始される。約5℃の低い重合温度においては、有機過酸化物は必要なフリーラジカルに分解しない。過酸化物開裂は触媒量の鉄(II)塩によって開始されなければならない。酸化段階2にある鉄は酸化段階3へ変換され、もはや過酸化物開裂に不適とする。ホルムアルデヒドスルホキシル酸塩の助けにより、鉄(III)イオンは鉄(II)イオンへ還元され、過酸化物開裂およびフリーラジカル開始が継続する。他の乳化重合系においては、過酸化水素またはペルオキソ二硫酸塩のような過酸化化合物がフリーラジカル形成剤として使用される。フリーラジカル形成速度を増すため、再び還元剤が使用される。挙げることのできる例はホルムアルデヒドスルホキシル酸塩、重亜硫酸塩、アスコルビン酸、イソアスコルビン酸およびナトリウムエリスロベートである。ホルムアルデヒドスルホキシル酸塩、特にホルムアルデヒドスルホキシル酸ナトリウムは特に効果的なそして良い価値のある還元剤であることが証明されている。しかしながら還元プロセスの間、ホルムアルデヒドスルホキシル酸はホルムアルデヒドを放出する。ホルムアルデヒドを含んではならないプラスチックもしくはポリマー分散液は亜硫酸塩、アスコルビン酸、イソアスコルビン酸またはナトリウムエリスロベートを使用して重合される。ホルムアルデヒド不含還元剤はより弱い還元剤であるから、ホルムアルデヒドスルホキシル酸塩に比較してより不完全な重合の不利益を許容しなければならない。さらにアスコルビン酸、イソアスコルビン酸およびナトリウムエリスロベートの使用はポリマーの望ましくない黄変へ導く。
本発明の目的は、それらの化学的性質がホルムアルデヒドスルホキシル酸塩にできるだけ似ているが、しかし使用中または使用後ホルムアルデヒドを放出しない新規なスルフィン酸誘導体を提供することである。
驚くべきことに、今やこの目的は後でもっと詳しく記載するタイプのスルフィン酸誘導体によって達成されることが判明した。
このため本発明は式(I):
のスルフィン酸化合物およびその塩を提供する。
式中、
Mは、水素原子、アンモニウムイオン、一価の金属イオン、または周期律表Ia,IIa,IIb,IVaまたはVIIIb族の二価金属イオンの当量であり;
R1は、OHまたはNR4R5であって、ここでR4およびR5は独立にHまたはC1−C6−アルキルであり;
R2は、H、アルキル、アルケニル、シクロアルキルまたはアリール(これらの基はC1−C6−アルキル、OH、O−C1−C6−アルキル、ハロゲンおよびCF3から独立に選ばれた1,2または3個の置換基を持つこともできる。)であり;
R3は、COOM,SO3M,COR4,CONR4R5またはCOOR4(M,R4およびR5は前記に同じ。)であり、またはもしR2が未置換もしくは前記のような置換アリールであれば、R3もHである。
本発明の目的に対し、以下に挙げた表現は以下の意味を有する。
アルキルは、好ましくは1〜6個、特に1〜4個の炭素原子を持つ直鎖もしくは分岐鎖アルキルを表す。アルキル基の例はメチル、エチル、n−プロピル、イソプロピル、n−ブチル、t−ブチル、n−ヘキシル等である。
同じことはO−アルキル中のアルキル基にも当てはまる。
アルケニルは、好ましくは3〜8個、特に3〜6個の炭素原子を持つ直鎖もしくは分岐鎖アルケニル基を表す。好ましくはアルケニル基はアリル基である。
シクロアルキル基は、特にC3−C6−シクロアルキルであり、シクロペンチルおよびシクロヘキシルが特に好ましい。
アリール(アラルキル中のアリールも)は、好ましくはフェニルまたはナフチルである。もしアリール基がフェニル基でありそして置換されているならば、それは好ましくは二つの置換基を有する。それらは特に2位および/または4位にある。
ハロゲンは、F,Cl,BrおよびI、好ましくはClおよびBrを表す。
Mは、好ましくはアンモニウムイオン、アルカリ金属イオン、またはアルカリ土類金属イオンもしくは亜鉛イオンの当量である。好適なアルカリ金属イオンは特にナトリウムおよびカリウムイオンである。好適なアルカリ土類金属イオンは特にマグネシウムおよびカルシウムイオンである。
R1は好ましくはヒドロキシルまたはアミノ基である。
R2は好ましくは水素原子、または上記のように置換されていてもよいアルキルもしくはアリールである。それは好ましくは1または2のヒドロキシルおよび/またはアルコキシ置換基を持つ。
R3は好ましくはCOOMまたはCOOR4(MおよびR4は前記に同じ。)であるか、またはもしR2が前記のように置換されていてもよいアリールであるならば、水素原子でもよい。
好ましい具体例は、式(I)において、Mがアルカリ金属イオンか、アルカリ土類金属イオンもしくは亜鉛イオンの当量であり、R1がヒドロキシルまたはアミノ基であり、R2がHまたはアルキルであり、R3がCOOMまたはCOOR4(MはH、アルカリ金属イオン、またはアルカリ土類金属イオンの当量であり、R4はC1−C6−アルキルである。)である化合物をカバーする。
別の好ましい具体例は、式(I)において、
Mがアルカリ金属イオンか、アルカリ土類金属イオンまたは亜鉛イオンの当量であり、R1がヒドロキシルまたはアミノ基であり、R2が未置換アリールまたは前記のように置換されたアリール特にヒドロキシフェニルまたはC1−C4−アルコキシフェニールであり、R3が水素原子である化合物をカバーする。
これらの新規化合物は亜ジチオン酸塩から製造される。有利にはスルフィン酸化合物にも望ましい陽イオンを有する塩が使用される。亜ジチオン酸塩を対応する芳香族アルデヒドと反応させることにより、R2が未置換もしくは置換アリール基であり、R3が水素原子である化合物が製造される。この反応は例として亜ジチオン酸ナトリウムと2−ヒドロキシベンズアルデヒドを使用し、以下の反応式によって例証することができる。
式(I)のすべての他の化合物は、亜ジチオン酸塩を対応する1,2−ジカルボニル化合物またはそのスルホン酸均等物と反応させることによって製造される。使用される1,2−ジカルボニル化合物は、特にグリオキシル酸または対応するケト化合物およびそれらのエステルである。この反応は亜ジチオン酸ナトリウムおよびグリオキシル酸を使用し、以下の反応式によって例証することができる。
反応は一般に塩基の存在下水性媒体中で実施される。水性媒体はメタノール、エタノール、イソプロパノールのような水溶性有機溶媒を含むことができる。使用し得る塩基は特にアルカリ金属水酸化物およびアルカリ土類金属水酸化物である。反応は一般に環境温度で実施され、発熱反応であるため反応混合物の加熱は一般に必要でない。所望の生成物は一般に反応混合物から沈殿するか、またはメタノール、イソプロパノール、アセトン等の極性水溶性有機溶媒を加えることによって沈澱することができる。得られる生成物は塩の形であり、これはもし望むならば酸性イオン交換体による酸性化もしくは処理によって遊離酸へ変換することができる。
さらに生成物は一般に対応する金属亜硫酸塩との混合物に製造される。多くの場合、この混合物は対応するスルホン酸および結晶水を含んでいる。新規化合物は通常の方法で、例えば水もしくは水性エタノールからの再結晶により同伴成分から分離することができる。
実際に使用するためには、同伴成分を分離することは必要でない。反対に、新規化合物の作用はこれら同伴成分によって増強される。このため本発明は言及した成分との混合物を提供する。この目的のため、亜硫酸金属塩40%までの量およびスルホン酸60%までの量が存在し得る。水分は30%まででよい。
これら新規化合物はその還元作用がホルムアルデヒドスルホキシル酸塩に匹敵する還元剤である。しかしながらそれらは使用前、使用中または使用後ホルムアルデヒドを排出しない利点を有する。このため新規化合物はホルムアルデヒドの発生が望ましくない分野において優先的に使用される。例えば、それらは織物印刷、特に色抜き印刷に、織物漂白もしくはバット染色に還元剤として、またはカオリン等の鉱物および繊維、例えばセルロース繊維の漂白のための還元剤として使用することができる。しかしながらそれらは重合を低温で実施することを許容するため過酸物開始剤と共に乳化重合における共触媒として好ましくは使用される。この目的のため、もし望むならばFe2+,Mn2+等の酸化し得る金属イオンと共にこのスルフィン酸を使用することができる。その時これら金属イオンはスルフィン酸化合物のカウンターイオン、すなわちM=Fe2+,Mn2+等として有利に使用される。
使用のため、新規化合物は一般に慣用の添加剤および補助剤と共に使用される。この点に関し、還元性化合物を使用してはならないことを除き、特に制限はない。
以下の実施例は限定なしで本発明を例証する。実施例中に与えられた純度数値は製造される結晶水を含んでいる製品に関する。すなわち、純度は結晶水含量を考慮に入れるとき有意義にさらに高くなる。
実施例1
2−ヒドロキシフェニルヒドロキシメチルスルフィン酸ナトリウム塩、
2−ヒドロキシベンズアルデヒド50mlと50%濃度水酸化ナトリウム水溶液45gを市販のヒドロ亜硫酸ナトリウム(亜ジチオン酸ナトリウム)90gの水溶液へ加えた。発熱反応が終了した後、生成した粗製品をメタノールを使用して分離し、そしてメタノール/エタノール/水混液から再結晶した。2−ヒドロキシフェニルヒドロキシメチルスルフィン酸ナトリウム塩が純度75.8%をもって製造された。スルフィン酸含量はヨード滴定を用いて決定された。IR分光データ(T=透過率)は以下のとおりである。
実施例2
4−メトキシフェニルヒドロキシメチルスルフィン酸ナトリウム塩:
4−メトキシベンズアルデヒド63gと、50%濃度水酸化ナトリウム水溶液45gを市販のヒドロ亜硫酸ナトリウム水溶液90へ加えた。得られた溶液の蒸発は粗製品を沈澱させた。このスルフィン酸のナトリウム塩はメタノール/エタノール/水混液からの再結晶により純度68%をもって得られた。対応スルホン酸のナトリウム塩が第2成分として存在した。
実施例3
2−ヒドロキシ−2−スルフィナート酢酸ナトリウム塩:
水800ml中の市販ヒドロ亜硫酸ナトリウム358gと、50%濃度グリオキシル酸268gと、50%濃度水酸化ナトリウム溶液285gの反応は2−ヒドロキシ−2−スルフィナート酢酸ジナトリウムを95%の収率で与えた。固体の粗製品はスルフィン酸43%(水和した水なしで)を含んでいた。メタノール/エタノール/水混液からの結晶化は良好な結晶においてスルフィン酸の水和物を与えた。イオウ含有成分はヨード滴定を使用して決定された。このスルフィン酸は約75℃においてインダンスレン紙との反応を示す。
IRスペクトルは以下のピークを示す。
13C核磁気共鳴スペクトル(63MHz):
δ(ppm):93.8(s);177.7(s)
実施例4
2−ヒドロキシ−2−スルフィナート酢酸亜鉛塩:
水性媒体中亜鉛末33gと二酸化イオウの反応は亜ジチオン酸亜鉛を与えた。これをその場で50%濃度グリオキシル酸136gと反応させた。発熱反応終了後、ZnO75gを加えた。濾液中に存在する粗生成物をメタノールを用いて沈澱した。スルフィン酸20%とスルホン酸48%(ヨード滴定により決定)よりなっていた。
実施例5
2−ヒドロキシ−2−スルフィナートプロピオン酸ジナトリウム塩:
水中の市販ヒドロ亜硫酸ナトリウム89gから出発し、ピルビン酸40gと、50%濃度水酸化ナトリウム溶液約78gとの反応により粗製品が得られた。粗製品はスルフィン酸40%を含有し、そしてメタノール/エタノール/水混液から再結晶した。含量はヨード滴定により決定した。対応するスルホン酸のジナトリウム塩が第2成分として存在した。測定されたIR分光信号は以下のとおりであった。
実施例6
2−ヒドロキシ−2−スルフィナートプロピオン酸エチルナトリウム塩:
水溶液中の市販ヒドロ亜硫酸ナトリウム90gをピルビン酸エチル60gと、50%濃度水酸化ナトリウム39gと反応させた後、2−ヒドロキシ−2−スルフィナートプロピオン酸エチルナトリウム塩が水和物として発熱反応の間に沈澱した。分離し、乾燥した粗製品はスルフィン酸79%(結晶水なしで計算)を含んでいた。この含量はヨード滴定により決定された。IR分光信号は以下のように要約できる。
実施例7
黒色布上の色抜き印刷のため、以下の処方を有する印刷ペーストを選択した。
印刷ペーストのためのベース処方:
実施例3に相当するホルムアルデヒド不含還元剤、または比較混合物のためホルムアルデヒドスルホキシル酸ナトリウムを次にこのベース処方へ加えた。
次に得られた混合物を黒い布へ次々に適用し、乾燥キャビネット中で乾燥した。次に布を102℃で10分間エージングし、その間に染料を還元した。シックナーおよび他の薬品を除去するため布を良く洗浄し、還元剤を前もって適用した場所において脱色された布地が明瞭になった。
色抜き印刷が良く実行されたことが明白である。調製物の洗浄はどのような種類の問題も提供しなかった。2−ヒドロキシ−2−スルフィナート酢酸のジナトリウム塩は、このように現行技術に従った織物色抜き印刷に使用することができる。この色抜き印刷の結果は表1に要約される。
実施例8
カオリンの漂白
カオリンの出発濃度は250g/lであった。スラリーはpH6.5を持っていた。攪拌機を用いて30分間カオリン懸濁液をホモジナイズした後、pHを半濃硫酸を用いて2.5に調節した。実施例3に相当する2−ヒドロキシ−2−スルフィノ酢酸ジナトリウム塩またはホルムアルデヒドスルホキシル酸ナトリウムを10%濃度溶液として添加し、そしてカオリン懸濁液の固形分に基づいていた(表2を見よ)。
反応条件:
温度:室温
pH:2.5
反応時間:2時間
2−ヒドロキシ−2−スルフィナート酢酸ジナトリウム塩を含んでいる調製物はカオリンの漂白において良好な結果を得る。ヒドロキシアセチルスルフィン酸ジナトリウム塩を含んでいる調製物はホルムアルデヒドスルホキシル酸ナトリウムよりも3〜4倍速く反応した。鉱物、特にカオリンの漂白における漂白は現行の技術に従って可能である。
実施例9(比較例)
水400g,Airvol 205(ポリビニルアルコール、88%加水分解、重合度=500;Air Products and Chenricals,Inc.製)の10%水溶液286g,Airvol 107(ポリビニルアルコール、98%加水分解、重合度=500、Air Products and Chenricals,Inc.製)の10%溶液286g,Igepa1 CO−887(非イオン界面活性剤、Rhone−Poulanc,Inc.製;エチレンオキシド約30モルを含むIgepalの70%濃度水溶液)47gを3.8リットル加圧反応器へ仕込み、1%濃度の硫酸鉄(II)水溶液4.8gと混合した。反応混合物を50%濃度リン酸溶液1.75gを用いてpH3.3へ調節した。次に酢酸ビニルモノマー1710gを計量して加えた。反応混合物を900rpmで攪拌し、35℃へ加熱した。次にエチレンガス200gを20.4気圧まての圧力において導入した。次に、
水 270g
イソアスコルビン酸 30g
29%濃度水酸化アンモニウム 0.8g
の組成を有するイソアスコルビン酸10%濃度水溶液(pH=4)を加えた。
重合は、脱イオン水589gと、35%濃度過酸化水素11.1gの組成を有する0.65%濃度過酸化水素水溶液合計10gを使用して開始した。
重合開始後、イソアスコルビン酸アンモニウム/イソアスコルビン酸溶液の残りの295.1gを4時間の間に計り入れた。0.65%濃度過酸化水素溶液の残りの590.1gは、反応混合物が1時間を要して35℃から55℃へ暖まり、そして反応混合物がその後55℃に3時間維持されるように重合をコントロールするために加えられた。重合時間合計4時間の後、遊離酢酸ビニルモノマーの含量はなお1.5%であった。
反応混合物を35℃へ冷却し、過剰のエチレンを脱気するため無圧力容器へ移した。エマルジョン中に残っている遊離酢酸モノマーはその後10%濃度イソアスコルビン酸水溶液20gと、3.5%過酸化水素の添加によって重合させ、その結果遊離酢酸ビニルモノマー0.5%以下の最終含量へ低下させた。ポリマーエマルジョンのpHは14%濃度のアンモニア水を使用して所望のpH(表3を見よ)へ調節した。ポリマーエマルジョン(ラテックス)の物理的性質は表3に要約される。
実施例10(比較例)
乳化重合を実施例9におけるように繰り返し、そしてイソアスコルビン酸アンモニウム/イソアスコルビン酸の代わりに、水270gと、ホルムアルデヒドスルホキシル酸ナトリウム22.1gよりなる水溶液を使用した。結果は表3に要約される。
実施例11(乳化重合における共触媒)
乳化重合を実施例9におけるように繰り返し、そしてイソアスコルビン酸アンモニウム/イソアスコルビン酸の代わりに、実施例3の還元剤(粗製品)33gと水270gよりなる水溶液を使用した。結果は表3に要約される。
実施例12
砕木パルプ漂白
砕木パルプ漂白のための条件:
ストック濃度:5.4%
漂白温度:75℃
漂白剤添加:漂白剤0.2/0.4/0.6/0.8/1.0%,絶乾(乾燥重量)
漂白時間:30分
漂白のため砕木パルプ100gを各々の場合ポリエチレンバッグに秤取した。漂白剤を添加するため、水溶液を調製した(これら溶液1mlは各漂白剤絶乾0.2%を含有)。漂白液をピペットした後、バッグを直ちにしばり、中味を閉じたバッグをこねることによって完全に混合した。漂白温度はサーモスタット(水浴)を使用して調節した。
必要な漂白時間後、パルプスラリーを計量フラスコへ移し、漂白後のpHを測定した。次に体積を水道水で300mlとし、パルプスラリーを攪拌することによって混合物をホモジナイズした。パルプララリー全部を使用して慣用の吸引シートフィーマーを使用してシートを形成した。得られたシートをシートフォーマー中12分間真空乾燥した。形成したすべてのシートの白色度R457は白色度測定装置(Datacolorからのエレフォ2000)を用いて決定した。結果は表4に要約される。
実施例13
脱インクパルプ漂白
脱インクパルプ漂白のための条件:
ストック濃度:7.4%
漂白温度:75℃
漂白剤添加:漂白剤0.2/0.4/0.6/0.8/1.0%,絶乾(乾燥重量)
漂白時間:60分
漂白のため脱インクパルプ70gを各々の場合ポリエチレンバッグに秤取した。漂白剤を添加するため、水溶液を調製した(これら溶液1mlは各漂白剤0.2%を含有)。漂白液をピペットした後、バッグを直ちにしばり、中味を閉じたバッグをこねることによって完全に混合した。漂白温度はサーモスタット(水浴)を使用して調節した。
必要な漂白時間後、パルプスラリーを計量フラスコへ移し、漂白後のpHを測定した。次に体積を水道水で300mlとし、パルプスラリーを攪拌することによって混合物をホモジナイズした。パルプララリー全部を使用して慣用の吸引シートフィーマーを使用してシートを形成した。得られたシートをシートフォーマー中15分間真空乾燥した。形成したすべてのシートの白色度R457は白色度測定装置(Datacolorからのエレフォ2000)を用いて決定した。結果は表5に要約される。
The present invention relates to sulfinic acid derivatives and their preparation and their use in various fields of application.
As is known, sulfinic acid H 2 SO 2 is one of the most powerful known reducing agents. The free acid is unstable. It is therefore only commercially available in the form of its stable and correspondingly manageable derivatives.
The following sulfinic acid derivatives are gaining commercial importance today.
1. Sodium dithionite (fiber bleaching in papermaking, vat dyeing and textile bleaching, mineral bleaching, heavy metal reduction in industrial wastewater)
2. Sodium formaldehyde sulfoxylate dihydrate (fiber color-free printing, fabric bleaching, redox cocatalyst in emulsion polymerization, heavy metal reduction, pharmaceuticals)
3. Formamidine sulfinic acid (fiber bleaching and textile bleaching in papermaking)
4). Zinc formaldehyde sulfoxylate (textile printing and bleaching)
All of the sulfinic acid derivatives mentioned above are used in the form of an aqueous solution or dispersion. In aqueous media, dithionite and alkali metal formamidine sulfinate-free formamidine sulfinic acid are virtually insoluble in water and have very little reducing action in its acid form-- Is stable only for a short time. As a result, they exhibit excellent reducing ability and excellent bleaching effect on the fiber even at room temperature. Aqueous preparations of sodium formaldehyde sulfoxylate and zinc formaldehyde sulfoxylate are stable for several months at room temperature. As a result, both of these formaldehyde sulfoxylates show their true reducing action at temperatures above 90 ° C. Both formaldehyde sulfoxylates of course have a reducing effect at temperatures below 90 ° C. in strongly alkaline or strongly acidic media or in the presence of a suitable strong oxidant.
This particular property of formaldehyde sulfoxylate, ie, exerting a very uniform and easily controllable reducing effect at temperatures of 5 ° C. to 90 ° C., can be used for free radical initiated emulsion polymerization. In this case, formaldehyde sulfoxylate is used in various emulsion polymerization systems. In the case of cold production of SBS (styrene butadiene rubber), the polymerization is initiated with an organic peroxide. At low polymerization temperatures of about 5 ° C., organic peroxides do not decompose into the necessary free radicals. Peroxide cleavage must be initiated by a catalytic amount of iron (II) salt. Iron in oxidation stage 2 is converted to oxidation stage 3 and is no longer suitable for peroxide cleavage. With the help of formaldehyde sulfoxylate, iron (III) ions are reduced to iron (II) ions, followed by peroxide cleavage and free radical initiation. In other emulsion polymerization systems, peroxide compounds such as hydrogen peroxide or peroxodisulfate are used as free radical formers. Again, reducing agents are used to increase the rate of free radical formation. Examples that may be mentioned are formaldehyde sulfoxylate, bisulfite, ascorbic acid, isoascorbic acid and sodium erythrobate. Formaldehyde sulfoxylate, in particular sodium formaldehyde sulfoxylate, has proven to be a particularly effective and good reducing agent. However, during the reduction process, formaldehyde sulfoxylic acid releases formaldehyde. Plastic or polymer dispersions which should not contain formaldehyde are polymerized using sulfite, ascorbic acid, isoascorbic acid or sodium erythrobate. Since formaldehyde-free reducing agents are weaker reducing agents, a more incomplete polymerization penalty must be tolerated compared to formaldehyde sulfoxylate. Furthermore, the use of ascorbic acid, isoascorbic acid and sodium erythrobate leads to undesirable yellowing of the polymer.
The object of the present invention is to provide novel sulfinic acid derivatives whose chemical properties are as close as possible to formaldehyde sulfoxylate but which do not release formaldehyde during or after use.
Surprisingly, it has now been found that this object is achieved by sulfinic acid derivatives of the type described in more detail later.
For this reason, the present invention provides a compound of formula (I):
The sulfinic acid compounds and salts thereof are provided.
Where
M is the equivalent of a hydrogen atom, an ammonium ion, a monovalent metal ion, or a divalent metal ion of Group Ia, IIa, IIb, IVa or VIIIb;
R 1 is OH or NR 4 R 5 , wherein R 4 and R 5 are independently H or C 1 -C 6 -alkyl;
R 2 is H, alkyl, alkenyl, cycloalkyl or aryl (these groups are independently selected from C 1 -C 6 -alkyl, OH, O—C 1 -C 6 -alkyl, halogen and CF 3. , 2 or 3 substituents.);
R 3 is COOM, SO 3 M, COR 4 , CONR 4 R 5 or COOR 4 (M, R 4 and R 5 are as defined above), or if R 2 is unsubstituted or substituted as described above If aryl, R 3 is also H.
For purposes of the present invention, the expressions listed below have the following meanings.
Alkyl represents straight-chain or branched alkyl having preferably 1 to 6, in particular 1 to 4 carbon atoms. Examples of alkyl groups are methyl, ethyl, n-propyl, isopropyl, n-butyl, t-butyl, n-hexyl and the like.
The same applies to the alkyl group in O-alkyl.
Alkenyl preferably represents a linear or branched alkenyl group having 3 to 8, in particular 3 to 6 carbon atoms. Preferably the alkenyl group is an allyl group.
Cycloalkyl group, especially C 3 -C 6 - cycloalkyl, cyclopentyl and cyclohexyl are particularly preferred.
Aryl (also aryl in aralkyl) is preferably phenyl or naphthyl. If the aryl group is a phenyl group and is substituted, it preferably has two substituents. They are especially in the 2nd and / or 4th position.
Halogen represents F, Cl, Br and I, preferably Cl and Br.
M is preferably an ammonium ion, an alkali metal ion, or an equivalent of an alkaline earth metal ion or zinc ion. Suitable alkali metal ions are in particular sodium and potassium ions. Suitable alkaline earth metal ions are especially magnesium and calcium ions.
R 1 is preferably a hydroxyl or amino group.
R 2 is preferably a hydrogen atom or an alkyl or aryl which may be substituted as described above. It preferably has 1 or 2 hydroxyl and / or alkoxy substituents.
R 3 is preferably COOM or COOR 4 (M and R 4 are the same as above), or may be a hydrogen atom if R 2 is an aryl which may be substituted as described above.
A preferred embodiment is that in formula (I), M is an alkali metal ion, an equivalent of an alkaline earth metal ion or zinc ion, R 1 is a hydroxyl or amino group, R 2 is H or alkyl, Covers compounds where R 3 is COOM or COOR 4 where M is the equivalent of H, an alkali metal ion, or an alkaline earth metal ion, and R 4 is C 1 -C 6 -alkyl.
Another preferred embodiment is in formula (I):
M is an equivalent of an alkali metal ion, an alkaline earth metal ion or a zinc ion, R 1 is a hydroxyl or amino group, R 2 is unsubstituted aryl or aryl substituted as described above, in particular hydroxyphenyl or C Covers compounds which are 1 -C 4 -alkoxyphenyl and R 3 is a hydrogen atom.
These new compounds are made from dithionite. A salt having a desirable cation is also preferably used for the sulfinic acid compound. Reaction of the dithionite with the corresponding aromatic aldehyde produces a compound in which R 2 is an unsubstituted or substituted aryl group and R 3 is a hydrogen atom. This reaction uses sodium dithionite and 2-hydroxybenzaldehyde as an example and can be illustrated by the following reaction scheme.
All other compounds of formula (I) are prepared by reacting dithionite with the corresponding 1,2-dicarbonyl compound or its sulfonic acid equivalent. The 1,2-dicarbonyl compounds used are in particular glyoxylic acid or the corresponding keto compounds and their esters. This reaction uses sodium dithionite and glyoxylic acid and can be illustrated by the following reaction scheme.
The reaction is generally carried out in an aqueous medium in the presence of a base. The aqueous medium can include a water-soluble organic solvent such as methanol, ethanol, isopropanol. Bases that can be used are in particular alkali metal hydroxides and alkaline earth metal hydroxides. The reaction is generally carried out at ambient temperature, and heating of the reaction mixture is generally not necessary since it is an exothermic reaction. The desired product is generally precipitated from the reaction mixture or can be precipitated by adding a polar water-soluble organic solvent such as methanol, isopropanol, acetone. The resulting product is in the form of a salt, which can be converted to the free acid by acidification or treatment with an acidic ion exchanger if desired.
Furthermore, the product is generally produced in a mixture with the corresponding metal sulfite. In many cases, this mixture contains the corresponding sulfonic acid and crystal water. The new compounds can be separated from the entrained components in the usual manner, for example by recrystallization from water or aqueous ethanol.
For practical use, it is not necessary to separate the entrained components. In contrast, the action of the new compounds is enhanced by these entrained components. The present invention thus provides a mixture with the mentioned components. For this purpose, amounts up to 40% metal sulfite and up to 60% sulfonic acid may be present. The moisture may be up to 30%.
These novel compounds are reducing agents whose reducing action is comparable to that of formaldehyde sulfoxylate. However, they have the advantage of not discharging formaldehyde before use, during use or after use. For this reason, the novel compounds are preferentially used in fields where formaldehyde generation is not desirable. For example, they can be used for textile printing, in particular color printing, as a reducing agent for textile bleaching or vat dyeing, or as a reducing agent for bleaching minerals and fibers such as kaolin, such as kaolin. However, they are preferably used as cocatalysts in emulsion polymerization with a peroxide initiator to allow the polymerization to be carried out at low temperatures. For this purpose, the sulfinic acid can be used with oxidizable metal ions such as Fe 2+ , Mn 2+ , if desired. At this time, these metal ions are advantageously used as counter ions of sulfinic acid compounds, that is, M = Fe 2+ , Mn 2+ and the like.
For use, the new compounds are generally used with conventional additives and adjuvants. In this regard, there is no particular limitation except that a reducing compound should not be used.
The following examples illustrate the invention without limitation. The purity figures given in the examples relate to the product containing the crystal water produced. That is, the purity is significantly higher when taking into account the water content of crystallization.
Example 1
2-hydroxyphenylhydroxymethylsulfinic acid sodium salt,
50 ml of 2-hydroxybenzaldehyde and 45 g of 50% strength aqueous sodium hydroxide solution were added to an aqueous solution of 90 g of commercially available sodium hydrosulfite (sodium dithionite). After the exothermic reaction was completed, the resulting crude product was separated using methanol and recrystallized from a methanol / ethanol / water mixture. 2-hydroxyphenylhydroxymethylsulfinic acid sodium salt was prepared with a purity of 75.8%. The sulfinic acid content was determined using iodometric titration. IR spectroscopic data (T = transmittance) is as follows.
Example 2
4-Methoxyphenylhydroxymethylsulfinic acid sodium salt:
63 g of 4-methoxybenzaldehyde and 45 g of 50% strength aqueous sodium hydroxide solution were added to a commercially available aqueous sodium hydrosulfite solution 90. Evaporation of the resulting solution precipitated the crude product. This sodium salt of sulfinic acid was obtained with a purity of 68% by recrystallization from a methanol / ethanol / water mixture. The corresponding sodium salt of sulfonic acid was present as the second component.
Example 3
2-hydroxy-2-sulfinate acetate sodium salt:
Reaction of 358 g of commercially available sodium hydrosulfite in 800 ml of water, 268 g of 50% strength glyoxylic acid and 285 g of 50% strength sodium hydroxide solution gave disodium 2-hydroxy-2-sulfinate acetate in 95% yield. The solid crude product contained 43% sulfinic acid (without hydrated water). Crystallization from a methanol / ethanol / water mixture gave the sulfinic acid hydrate in good crystals. Sulfur-containing components were determined using iodometric titration. This sulfinic acid shows a reaction with indanthrene paper at about 75 ° C.
The IR spectrum shows the following peaks:
13 C nuclear magnetic resonance spectrum (63 MHz):
δ (ppm): 93.8 (s); 177.7 (s)
Example 4
2-hydroxy-2-sulfinate acetate zinc salt:
Reaction of 33 g zinc dust with sulfur dioxide in an aqueous medium gave zinc dithionite. This was reacted in situ with 136 g of 50% strength glyoxylic acid. After the exothermic reaction, 75 g of ZnO was added. The crude product present in the filtrate was precipitated with methanol. It consisted of 20% sulfinic acid and 48% sulfonic acid (determined by iodometric titration).
Example 5
2-hydroxy-2-sulfinate propionic acid disodium salt:
Starting from 89 g of commercial sodium hydrosulfite in water, a crude product was obtained by reaction of 40 g of pyruvic acid with about 78 g of 50% strength sodium hydroxide solution. The crude product contained 40% sulfinic acid and was recrystallized from a methanol / ethanol / water mixture. The content was determined by iodometric titration. The corresponding disodium salt of sulfonic acid was present as the second component. The measured IR spectroscopic signals were as follows.
Example 6
2-hydroxy-2-sulfinate propionic acid ethyl sodium salt:
After reacting 90 g of commercially available sodium hydrosulfite in an aqueous solution with 60 g of ethyl pyruvate and 39 g of 50% strength sodium hydroxide, 2-hydroxy-2-sulfinate ethyl sodium salt of propionate was hydrated as an exothermic reaction. It settled in between. The crude product separated and dried contained 79% sulfinic acid (calculated without water of crystallization). This content was determined by iodometric titration. The IR spectroscopic signal can be summarized as follows.
Example 7
A printing paste having the following formulation was selected for color printing on a black cloth.
Base formulation for printing paste:
A formaldehyde-free reducing agent corresponding to Example 3, or sodium formaldehyde sulfoxylate, was then added to this base formulation for a comparative mixture.
The resulting mixture was then applied sequentially to a black cloth and dried in a drying cabinet. The fabric was then aged at 102 ° C. for 10 minutes, during which time the dye was reduced. The fabric was washed well to remove thickener and other chemicals, and the decolorized fabric became clear where the reducing agent was previously applied.
It is clear that color printing has been performed well. Cleaning the preparation did not provide any kind of problem. The disodium salt of 2-hydroxy-2-sulfinate acetic acid can thus be used for textile color printing according to current technology. The results of this color printing are summarized in Table 1.
Example 8
Kaolin bleaching The starting concentration of kaolin was 250 g / l. The slurry had a pH of 6.5. After homogenizing the kaolin suspension for 30 minutes using a stirrer, the pH was adjusted to 2.5 using semi-concentrated sulfuric acid. 2-hydroxy-2-sulfinoacetic acid disodium salt corresponding to Example 3 or sodium formaldehyde sulfoxylate was added as a 10% strength solution and was based on the solids content of the kaolin suspension (see Table 2) .
Reaction conditions:
Temperature: Room temperature pH: 2.5
Reaction time: 2 hours
Preparations containing 2-hydroxy-2-sulfinate acetic acid disodium salt give good results in bleaching kaolin. Preparations containing hydroxysodium sulfinic acid disodium salt reacted 3-4 times faster than sodium formaldehyde sulfoxylate. Bleaching in the bleaching of minerals, especially kaolin, is possible according to current technology.
Example 9 (comparative example)
Water 400 g, Airvol 205 (polyvinyl alcohol, 88% hydrolysis, degree of polymerization = 500; Air Products and Chemicals, Inc.) 286 g of 10% aqueous solution, Airvol 107 (polyvinyl alcohol, 98% hydrolysis, degree of polymerization = 500, 286 g of a 10% solution of Air Products and Chemicals, Inc., 47 g of Igepa1 CO-887 (nonionic surfactant, manufactured by Rhone-Poulenc, Inc .; 70% strength aqueous solution of Igepal containing about 30 mol of ethylene oxide) Charged to a 0.8 liter pressurized reactor and mixed with 4.8 g of 1% strength aqueous iron (II) sulfate solution. The reaction mixture was adjusted to pH 3.3 with 1.75 g of 50% strength phosphoric acid solution. Next, 1710 g of vinyl acetate monomer was metered in. The reaction mixture was stirred at 900 rpm and heated to 35 ° C. Next, 200 g of ethylene gas was introduced at a pressure up to 20.4 atm. next,
270 g of water
Isoascorbic acid 30g
29% concentration ammonium hydroxide 0.8g
An isoascorbic acid 10% concentration aqueous solution (pH = 4) having the following composition was added.
The polymerization was initiated using a total of 10 g of a 0.65% strength aqueous hydrogen peroxide solution having a composition of 589 g of deionized water and 11.1 g of 35% strength hydrogen peroxide.
After the initiation of polymerization, the remaining 295.1 g of ammonium isoascorbate / isoascorbic acid solution was metered in during 4 hours. The remaining 590.1 g of 0.65% strength hydrogen peroxide solution was polymerized so that the reaction mixture warmed from 35 ° C. to 55 ° C. over 1 hour and the reaction mixture was then maintained at 55 ° C. for 3 hours. Added to control. After a total polymerization time of 4 hours, the content of free vinyl acetate monomer was still 1.5%.
The reaction mixture was cooled to 35 ° C. and transferred to a pressureless vessel to degas excess ethylene. The free acetic acid monomer remaining in the emulsion is then polymerized by addition of 20 g of 10% strength isoascorbic acid aqueous solution and 3.5% hydrogen peroxide, resulting in a final content of 0.5% or less of free vinyl acetate monomer. I let you. The pH of the polymer emulsion was adjusted to the desired pH (see Table 3) using 14% strength aqueous ammonia. The physical properties of the polymer emulsion (latex) are summarized in Table 3.
Example 10 (comparative example)
The emulsion polymerization was repeated as in Example 9, and instead of ammonium isoascorbate / isoascorbic acid, an aqueous solution consisting of 270 g of water and 22.1 g of sodium formaldehydesulfoxylate was used. The results are summarized in Table 3.
Example 11 (cocatalyst in emulsion polymerization)
The emulsion polymerization was repeated as in Example 9, and instead of ammonium isoascorbate / isoascorbic acid, an aqueous solution consisting of 33 g of the reducing agent (crude product) of Example 3 and 270 g of water was used. The results are summarized in Table 3.
Example 12
Groundwood bleaching <br/> Conditions for groundwood bleaching:
Stock concentration: 5.4%
Bleaching temperature: 75 ° C
Bleaching agent addition: Bleaching agent 0.2 / 0.4 / 0.6 / 0.8 / 1.0%, absolutely dry (dry weight)
Bleaching time: 30 minutes For bleaching, 100 g of groundwood pulp was weighed in a polyethylene bag in each case. Aqueous solutions were prepared for the addition of bleach (1 ml of these solutions contained 0.2% of each bleach completely dry). After pipetting the bleach solution, the bag was immediately squeezed and mixed thoroughly by kneading the closed bag. The bleaching temperature was adjusted using a thermostat (water bath).
After the required bleaching time, the pulp slurry was transferred to a measuring flask and the pH after bleaching was measured. The volume was then made up to 300 ml with tap water and the mixture was homogenized by stirring the pulp slurry. Sheets were formed using a conventional suction sheet filmer using the entire pulp rally. The obtained sheet was vacuum-dried for 12 minutes in a sheet former. The whiteness R457 of all the formed sheets was determined using a whiteness measuring device (Elefo 2000 from Datacolor). The results are summarized in Table 4.
Example 13
Deinked pulp bleaching conditions for deinked pulp bleaching:
Stock concentration: 7.4%
Bleaching temperature: 75 ° C
Bleaching agent addition: Bleaching agent 0.2 / 0.4 / 0.6 / 0.8 / 1.0%, absolutely dry (dry weight)
Bleaching time: For 60 minutes, 70 g of deinked pulp was weighed in each case in a polyethylene bag. In order to add bleach, aqueous solutions were prepared (1 ml of these solutions contained 0.2% of each bleach). After pipetting the bleach solution, the bag was immediately squeezed and mixed thoroughly by kneading the closed bag. The bleaching temperature was adjusted using a thermostat (water bath).
After the required bleaching time, the pulp slurry was transferred to a measuring flask and the pH after bleaching was measured. The volume was then made up to 300 ml with tap water and the mixture was homogenized by stirring the pulp slurry. Sheets were formed using a conventional suction sheet filmer using the entire pulp rally. The obtained sheet was vacuum-dried for 15 minutes in a sheet former. The whiteness R457 of all the formed sheets was determined using a whiteness measuring device (Elefo 2000 from Datacolor). The results are summarized in Table 5.
Claims (15)
のスルフィン酸化合物およびその塩:
式中、
Mは水素原子、アンモニウムイオン、一価の金属イオン、または周期律表Ia,IIa,IIb,IVaまたはVIIIb族の二価金属イオンの当量であり:
R1はOHであり;
R2はH,C 1 −C 6 アルキル、C 3 −C 8 アルケニル、C3−C6シクロアルキル、フェニルまたはナフチル(これらの基はC1−C6−アルキル、OH,O−C1−C6−アルキル、ハロゲンおよびCF3から独立に選ばれた1,2または3個の置換基を持つこともできる。)であり;
R3はCOOMまたはCOOR 4 であり;そして
R 4 はHまたはC1−C6アルキルである。Formula (I):
Sulfinic acid compounds and salts thereof:
Where
M is the equivalent of a hydrogen atom, an ammonium ion, a monovalent metal ion, or a divalent metal ion of group Ia, IIa, IIb, IVa or VIIIb of the periodic table:
R 1 is OH ;
R 2 is H, C 1 -C 6 alkyl, C 3 -C 8 alkenyl, C 3 -C 6 cycloalkyl, phenyl or naphthyl (these groups are C 1 -C 6 -alkyl, OH, O—C 1 — Can also have 1, 2 or 3 substituents independently selected from C 6 -alkyl, halogen and CF 3 );
R 3 is COOM or COOR 4 ; and
R 4 is H or C1-C6 alkyl .
である請求項1のスルフィン酸化合物。M is an alkali metal ion, or an equivalent of an alkaline earth metal ion or zinc ion,
The sulfinic acid compound according to claim 1.
Compounds of the following formula (M = Na, K, Mg, Ca, Zn):
式(I)の化合物 20〜90重量%
式(I)の化合物に対応するスルホン酸 0〜60重量%
M2SO3 0〜40重量%The mixture of claim 7 having the following composition:
20-90% by weight of the compound of formula (I)
Sulfonic acids corresponding to compounds of formula (I) 0-60% by weight
M 2 SO 3 0 to 40% by weight
2−ヒドロキシ−2−スルフィナート 40〜73重量%
酢酸ジナトリウム塩
2−ヒドロキシ−2−スルホナート酢酸 2〜7重量%
ジナトリウム塩
亜硫酸ナトリウム 0〜33重量%
水 5〜30重量%The mixture of claim 8 having the following composition:
2-hydroxy-2-sulfinate 40-73% by weight
Disodium acetate 2-hydroxy-2-sulfonate acetic acid 2-7% by weight
Disodium sodium sulfite 0-33% by weight
5-30% by weight of water
2−ヒドロキシ−2−スルフィナート 20〜70重量%
酢酸亜鉛塩
2−ヒドロキシ−2−スルホナート酢酸 5〜60重量%
亜鉛塩
水 5〜30重量%The mixture of claim 8 having the following composition:
2-Hydroxy-2-sulfinate 20-70% by weight
Zinc acetate salt 2-hydroxy-2-sulfonate acetic acid 5-60% by weight
Zinc brine 5-30% by weight
2−ヒドロキシ−2−スルフィナート 38〜70重量%
プロピオン酸ジナトリウム塩
2−ヒドロキシ−2−スルホナート 5〜30重量%
プロピオン酸ジナトリウム塩
亜硫酸ナトリウム 0〜33重量%
水 5〜30重量%The mixture of claim 8 having the following composition:
2-hydroxy-2-sulfinate 38-70% by weight
Propionic acid disodium salt 2-hydroxy-2-sulfonate 5-30% by weight
Propionic acid disodium salt sodium sulfite 0-33 wt%
5-30% by weight of water
2−ヒドロキシ−2−スルフィナート 60〜80重量%
プロピオン酸エチルナトリウム塩
2−ヒドロキシ−2−スルホナート 0〜5重量%
プロピオン酸エチルナトリウム塩
亜硫酸ナトリウム 0〜5重量%
水 5〜20重量%The mixture of claim 8 having the following composition:
2-hydroxy-2-sulfinate 60-80% by weight
Propionic acid ethyl sodium salt 2-hydroxy-2-sulfonate 0-5% by weight
Propionate ethyl sodium salt Sodium sulfite 0-5% by weight
5-20% by weight of water
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DE19743759.1 | 1997-10-02 | ||
DE19743759A DE19743759A1 (en) | 1997-10-02 | 1997-10-02 | New sulfinic acid derivatives, used as reducing agents |
PCT/EP1998/004055 WO1999018067A1 (en) | 1997-10-02 | 1998-07-01 | Sulphinic acid derivatives, method for producing them, and their use |
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